Seldom ever was any knowledge given to keep, but to impart; the grace of this rich jewel is lost in concealment. Hall, Joseph
The learning and knowledge that we have, is, at the most, but little compared with that of which we are ignorant. Plato
The only good is knowledge, and the only evil is ignorance. Laertius, Diogenes
Two stones build two houses, three stones build six houses, four build twenty-four houses, five build one hundred and twenty houses, six build seven hundred and twenty houses and seven build five thousand and forty houses. From thence further go and reckon what the mouth cannot express and the ear cannot hear. Yezirah, Sepher